21801705

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{23827}}^1$

素因数の和:23896

約数の個数: 16

約数和(自身を含む): 35456064

約数和(自身を除く): 13654359

約数列:

[1, 3, 5, 15, 61, 183, 305, 915, 23827, 71481, 119135, 357405, 1453447, 4360341, 7267235, 21801705]

約数ペア:

[(1, 21801705), (3, 7267235), (5, 4360341), (15, 1453447), (61, 357405), (183, 119135), (305, 71481), (915, 23827)]